Intermediate-frequency quenching hard-surface strain roller and manufacture method thereof

Abstract

The invention relates to a tension roller used in a cold rolling production line, in particular to a tension roller with a mid-frequency quenching hard surface, and a manufacturing method thereof. The tension roller comprises a roller and round side covers which are fixedly and closely covered at the openings of the two ends of the roller, and the circle centers of the two side covers are in coupling connection with a left axle head and a right axle head respectively. The tension roller is characterized in that: the outer surface of the roller is covered with a spaying layer, the outsides of the two side covers are provided with concave grooves in a surrounding way, the concave groove is internally provided with a through hole communicated with the interior of the roller; the spaying layer adopts the functional metal ceramic coating which is composed of compound metal ceramics of WC/Co metal ceramics and metal or alloy. The tension roller mainly solves the technical problems that the existing product roller surface is sprayed with hard chromium plating on the outer surface and is easy to be pressed into concave pits or protuberances by sundries such as ferric oxide, etc. When in use, drawing stamps or stains are formed on the surface of the finished product, the band steel, thus influencing the surface quality of the band steel, and the tension roller is beneficial to radiating the interior of the roller when in use.

Description

technical field [0001] The invention relates to a tension roll used in a cold rolling production line, in particular to a tension roll with an intermediate frequency quenching hard surface and a manufacturing method thereof. Background technique [0002] With the commissioning of Baosteel's Baori Automobile Sheet Cold Rolling Production Line, high-end, high-value-added automotive sheets have been widely used in car manufacturers such as Shanghai Volkswagen, Shanghai GM, FAW-Volkswagen, and BMW Brilliance. More and more steel manufacturers in China The company will use Baosteel Baori Automobile Sheet Cold Rolling Production Line as a template to establish a high-end cold-rolling production line. For example, Baosteel No. 5 cold-rolled CAPL and CGL production lines are the most advanced cold-rolling production lines at home and abroad, mainly producing high-end automotive sheets. The quality requirements of the strip surface are getting higher and higher, and the speed of the ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an intermediate frequency quenching hard surface tension roller and its manufacturing method, which mainly solves the problem that the outer surface of the existing product roller surface is sprayed with hard chromium plating, and it is easy to be pressed into pits or pits by iron oxide and other sundries during use. Protrusions, forming pull marks or imprints on the surface of the finished strip steel, affecting the technical problems of the surface quality of the strip steel, and are conducive to heat dissipation in the roller during use

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